Chevrolet s10 4.3

Looked in the intake and it looked like this, so I took out the filter and checked what was wrong, the filter had slid down the inner tube and there was a bump on the tube that allowed the soot to crawl past, lifted the filter up and tightened the clamp, hopefully it works better now.
I got about 30 liters of charcoal and soot out and have driven about 400 km, would you make a tighter grate that you can move back and forth
, or would you continue as is?
Would the gas be better with a tighter grate?
Took some pictures through the ashtray, what you see is the grate from below.



10 Likes

I think thats a lot of char, a tighter grate would do some good, but! Not too tight, it will give you “constipation problems” instead.
Nothing wrong with passing much char, but it needs much heat for the charring process, which could make it a little more sensitive to moisture in wood.
If it’s not to much work cleaning and put the char back in the fuel bin, drive happy as is?

9 Likes

Jan, I would keep it as is. In the Volvo gasifier I slip almost about the same amount. Say a 10 liter bucket every 150 km. Two years ago I cut the gasifier apart to look for leaks and I took the oppertunity to lower the grate just a little (~5mm) because I was a constipated from time to time. Ever since I haven’t used the grate shaker at all. We may waste 5-10% of the fuel, but it doesn’t matter, does it? You could always dump the char back in with the chunks if you want.

Edit: Ops, Göran beat me to it :smile:

9 Likes

Thanks for the answers, then I’ll continue as is, I had problems in the beginning with the grid being too tight, as it is now I never need to worry, it works all the time.

8 Likes

That’s how it should be. Closer to perfection often means trouble.

7 Likes

It works to engage 4x4 but when I go to disengage it the lights for 4x4h 4x4l and 2wd start flashing and nothing happens when I press the buttons, so I can’t engage 4x4 again.
I’ve seen that the front axle is disengaged so the vacuum works, I also hear that the motor on the gearbox is working.
If I disconnect the battery everything works again.
Does anyone know where I should look for the fault, it’s probably something electrical?

3 Likes

Personally no
 But Google AI spit this back based on your info.

Based on your description—specifically that the lights flash, 4x4 fails to disengage/re-engage, but the system resets when the battery is disconnected—

you are likely dealing with an issue in the Transfer Case Control Module (TCCM) or a faulty Transfer Case Encoder Motor. The fact that the battery disconnect resets it suggests the module is getting confused, locking up, and failing to read the position of the encoder motor properly.

Here is a breakdown of the most likely causes and how to fix them:

Top Suspects

  1. Transfer Case Control Module (TCCM) Failure: The TCCM is the brain of the 4x4 system. It sits behind the passenger side kick panel. These are known to develop broken solder joints or corrode, leading to frozen operation that can only be reset by cutting power.
  2. Encoder Motor/Sensor (Gearbox Motor): Even if you hear it working, the internal position sensor (encoder) might be giving the TCCM incorrect data about where the gear is actually located.
  3. Vacuum Switch Failure: Although you believe the front axle is disengaged, a bad vacuum switch on the transfer case can cause the front axle to not align with the transfer case, triggering the blinking lights.

Recommended Troubleshooting Steps

  • Check the TCCM Connector: Before replacing parts, check the connector on the TCCM (behind the passenger side kick panel). It is known to get corrosion, which can cause intermittent 4x4 failures.
  • Scan for Codes: The blinking lights are designed to show a code. You can use a scanner, or by jumping pins 4 and 13 on the Data Link Connector, you can count the flashes to get a specific error code (e.g., Code 2 often means an encoder circuit failure).
  • Inspect/Replace the Vacuum Switch: If the switch on the top of the transfer case is faulty, it will make the front axle act irregularly.
  • Inspect the Encoder Motor Connector: Corrosion here can also cause a loss of communication.

Why Disconnecting the Battery Works

Disconnecting the battery resets the TCCM to its default state, clearing the error code until it receives another incorrect signal from the encoder motor or vacuum switch.

If this issue happens frequently, the TCCM is the most likely candidate for replacement.

7 Likes

Jan, my char and ashes look about the same. I think a little slipping of char is good it keeps it from getting to tight on the grate and plugging up with ash causing a high vaccum pull.

6 Likes

Thanks Sean, I haven’t found this, maybe I should start with ai.
I have a new engine which has worked fine all summer, checked the data box, but not the vacuum connector on the box, will try to change this and see if it works, thanks for the help.

8 Likes

It was the AI summary from a google search. Even if you did search, you would most likely have gotten different results. I figured I would get better results for you searching from here. We just had more S10s sold here.

When google was new we used to play a game and do google searches all with the same phrase and compared results. People were from all over the country and everyone got different results.

7 Likes

The filter in the wood truck seems to be working again, almost no soot in the tank from the coolers.
From one thing to the other, what kind of wood boilers do you have, JO, Johan and Göran, and are you satisfied?
Is it worth installing an Egor 25 that looks good today, or is this one too poorly efficient, I think it is 87%.

9 Likes

Jan, personally I wouldn’t look out for efficiency, but rather ease of cleanout and refractory simplicity.
I use a hand made boiler from Extuna in Falun. The ceramic refractory has held up for 23 years now and the cleanout is a 2 min procedure - brushing 10 tubes - that’s all. I’m very satisfied with my boiler.

7 Likes

I bought my boiler in 2012, chose it for ease of use so even the kids could make a fire if necessary, it cleans the turbulators mechanically every time you open the wood filling door and I have taken the turbulators out twice, once in the beginning to clean with the wire brush and once like a couple years ago but there was nothing to clean so maintenance wise the only thing to do is to ash out the wood filing are and the ash area once every week or two weeks, no scraping the walls. I get about 18 liters of ash then (5 us gal).
I go through about 36m3 (10 full cords) firewood per year and the ceramics are still as good as new.
And now for the bad stuff, I have replaced the cast iron gas throat after only three years as it got bent badly from the heat and the new one had a new design and had about three times the mass so I think they had problems with that and it shows no signs of wear now.
The ‘anti tar plates’ hanging in the wood filling area also works great but i have had a few of them out twice to bend them straight again from heat distorsion and now I actually have burnt through two of them so I will take them out, hammer them straight and weld a plate on (behind those the primary air leads to holes in the plates in the bottom).
The secondary air channel now shows signs of having a little soot backing up into it, I’ll clean it out in spring.
All in all I am very happy with it, I have the 50kW version and if my 5500 liters (1500 us gal) tanks are empty it takes about one and a half filling of the boiler to fill the tanks. Another downside is also the price of course, I managed to get 10% off I believe since I was the only one in this part of the country having one and I agreed to show it to potential new customers (luckily none has come so far).
I did a lot of research online and went to a few people that had these boilers and I could not find anyone that weren’t happy with it and I agree, it works flawlessly with virtually no maintenance, knowing what I know now I probably would have gone for the 60kW version (only difference is it burns quicker so probably a little bigger exhaust fan) but I would definitely buy it again

8 Likes
11 Likes

It must be a challenge fighting all that traffic Jan. :joy:

11 Likes